mitt romney's 47% comment fell right into the president obama's hand and president obama may have just returned the favor to a certain degree for romney. our white house correspondent brianna keilar is following this verbal warfare for us. brianna, what's going on here? >> reporter: wolf, last night, president obama and mitt romney were both on "60 minutes" on cbs. and mitt romney is now seizing on some comments that president obama made, saying that he is trivializing the deaths of four americans in libya and the white house is firing back. president obama left the white house monday and touched down in new york city for the u.n. general assembly. his appearance on "60 minutes" the night before grabbing headlines. >> well, i said even at the time that this is going to be a rocky path. >> reporter: cbs news's steve croft asked president obama about the recent turmoil in the middle east. >> there are going to be bumps in the road because in a lot of these places, the one organizing principle has been islam. >> reporter: conservatives including mitt romney are calling the comment insensi